Woven fabric.



} PATENTED JULY so, 1907. J. K. DALKRANIAN.

WOVEN FABRIC. APPLIUATIOH FILED JULY 17, 1905. RENEWED JUNE 10. 190'!- da a WITNESSES,

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UNITED STATES PATENT orrron.

JAMES KARMI DALKRANIAN, OF NEW YORK,

N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, TO

UNITED STATES PERSIAN CARPET COMPANY, OF NEW YORK, N. Y., A CORPORATIONOF NEW YORK.

WOVEN FABRIC.

Patented July 30, 1907.

Application filed July 17, 1905, Serial No. 270,015- Renewed June10,1907. Serial No. 378,284.

To all whom it may concern.-

Be it known that I, .TAMEs KARMI DALKRANIAN, a citizen of the UnitedStates, and a resident of the city of New York, borough of the Bronx, inthe county and State of New York, have invented new and usefulImprovements in Selvages for Woven Fabrics, of which the following is afull, clear, and exact description.

The object of the invention is to provide a certain new and usefulimprovement in selvages for fabrics notably woven pile fabrics of theoriental rug type.

The invention consists essentially in a selvage having a selvage groundwarp, and a selvage binding warp interwoven transversely with the saidselvage ground warp and interlooped with the binding weft of the wovenfabric.

The invention also consists of novel features and parts and combinationsof the same, as will be more fully described hereinafter and thenpointed out in the claims.

A practical embodiment of the invention is represented in theaccompanying drawings forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all theviews.

Figures 1, 2, 3, and 4, are enlarged plan views illustrating the severalsteps in forming the selvage; and Fig. 5 is an enlarged plan view of thefinished fabric.

The body A of the woven fabric is provided-at each side with a selvageB, see Fig. 5, and consists of pairs of ground warp threads a, a, thepile threads b each interwoven with a pair of ground warp threads a, ain the form of a Persian knot, and the weft c interwoven with the groundwarp threads a, a preferably for three consecutive picks between theadjacent rows of pile threads I), as will be readily understood byreference to Fig. 5. Each selvage B consists of a selvage binding warpthread 0?, and a selvage ground warp preferably formed of a plurality ofthreads 0, e. The selvage binding warp thread d is interwoven with theselvage ground warp threads 0, e in a transverse direction, and is twiceinterlooped with the end loop 0 of the weft thread 0. By reference toFig. 5 it will be seen that the selvage binding warp thread a is doubledor passes twice over the selvage ground warp threads 6, e, and likewiseis doubled or passes twice under the said sel vage ground warp threadse, e for each two picks, the inner loops d, d of the said doubledportions of the selvage binding warp thread cl, being interlooped withthe same end loop 0 of the weft c of the fabric body A.

A separate yarn tube F is provided for each selvage binding warp threadd and this yarn tube F is mounted on a suitable loom, mounted to swingup and down and to be bodily shifted transversely by suitable mechanism.The selvage ground warp threads e, e

are arranged outside of the heddles D, D and extend approximately inalinement with the upper ground warp thread of the fabric body A, itbeing understood that the selvage ground warp threads 0, e are notshifted the same as the ground warp threads a, a, but simply unwind froma suitable warp beam arranged on the frame of the loom.

The body A of the fabric is woven by the loom in a manner more fullydescribed in the application above referred to, and in order tosimultaneously weave the selvage B, the selvage-forming yarn tube Foperates in conjunction with the shuttle mechanism, but is practicallydormant during the formation of the Persian knots by the pile threads12. Thus, immediately previous to the passage of the shuttle through theopen shed at the first pick the yarn tube F is in an uppermost positionand is then shifted transversely and then caused to move downwardbetween the innermost selvage ground warp thread 0 and the firstadjacent ground warp thread a of the fabric body A as illustrated inFig. 1. When the several parts are in this position, the weft thread 0is passed in the direction of the arrow 90 through the open shed andover the selvage binding warp d in front of the yarn tube F, and thenthe yarn tube F is caused to move upward, after which the weft c isbeaten in by the lay and returned to its normal rearmost position. Theheddles D, D now change, for opening the shed for the second pick, andthe yarn tube F is now shifted outwardly in a transverse direction, andthen caused to swing downward outside of the outermost selvage groundwarp thread 6, as plainly indicated in Fig. 2 While the yarn tube is inthis position the weft c is passed through the open shed in a reversedirection, that is, in the direction of the arrow 00 to form the endloop 0 (see Fig.2), and then the yarn tube F is caused to rise and tomove transversely in an inward direction and back to the first positionabove referred to see Fig. 3, and during this time the weft c is drawntaut so that the end loop 0 is interlooped with the two loops cl, d ofthe selvage binding warp thread d, as illustrated in Fig. 4. The yarntube F is caused to descend immediately previous to the return of thenext weft c at the third pick, it being understood that the weft creturns in the direction of the arrow 90 at the third pick (see dottedlines Fig. 4), and then the yarn tube F and its pile thread I) at thefourth pick operate in conjunction with the ground warps a, a, to formthe Persian knot, after which the shuttle is again sent through the openshed, and the above-described operation is repeated.

It is understood that three weft threads 0 are interwoven with theground warp threads a, a between successive rows of Persian knots, buteach end-loop c is interlooped with the two loops d, d of the selvagebinding warp thread d, and a repetition of the opera tion in forming theselvage takes place after each two picks.

It is understood that the yarn tube F is moved suificiently far downwardto cause the weft c to always pass over the selvage binding warp threadd and as the yarn tube F is twice shifted in a transverse direction foreach two picks, it is evident that the selvage binding warp thread dpasses doubled up over the selvage ground warp threads e, e, andlikewise in a doubled up condition under the said selvage ground warpthreads e, e, as will be seen by reference to Figs. 4 and 5. It willfurther be noticed that by the arrangement described the loops d, d ofthe selvage binding warp thread (2 are interlooped with the end loop 0of the weft 0 between the innermost selvage ground warp thread e and thenext adjacent ground warp thread a of the fabric body A.

It is understood that I do not limit myself to the use of three weftthreads between adjacent rows of pile threads b, as the number of weftthreads may be increased or diminished. In the formation of orientalrugs having Persian knots, it is customary, however, to employ threewefts between adjacents rows of pile threads. It will be noticed that inusing three weits between adjacent rows of pile threads one end-loop cis always formed between adjacent rows of pile threads b (see Fig. 5),and one end-loop 0 appears in alinement with alternate rows of pilethreads I).

The selvage formed in the manner described is exceedingly strong anddurable, and gives a very fine finish to each side edges of the fabricbody A, it being expressly understood that the loom is preferablyprovided at each side with a yarn tube F, selvage binding warp d andselvage ground warp e e to form a selvage B for each side edge of thefabric body A.

Having thus described my invention, I claim as new and desire to secureby Letters Patent,-

1. A woven fabric, comprising a fabric body having a binding weft and aselvage having a selvage ground warp, and a continuous selvage bindingWarp interwoven with thg said selvage ground warp and interlooped twicewith each loop of the said binding weft.

2. A woven fabric, comprising a fabric body having a binding weft and aselvage for the said body having a plurality of selvage ground warpthreads, and a continuous selvage binding warp thread extending twiceover and twice under the said selvage ground warp threads for each twopicks and interlooped twice with each end loop of the said binding weft.

3. A woven pile fabric, comprising a fabric body and a selvage therefor,the said fabric body having pairs of ground warp threads, pile threadseach interlooped with a pair of ground warp threads in the form of aPersian knot, and a binding weft interwoven with the said ground warpthreads, and the said selvage having a selvage ground warp and acontinuous selvage binding warp interwoven with the said selvage groundwarp and inter-looped twice with each end loop of the said binding weftof the fabric body.

In testimony whereof-I have signed my name to this specification in thepresence of two subscribing witnesses JAMES KARMI DALKRANIAN.

Witnesses:

'inno. G. Hosrnn, EVERARD B. MARSHALL.

